With three mobile UK network, when does a voicemail call connect for the purposes of call data: is it when the call connects to voicemail of when the beep goes to leave your message? Also, does anyone know how long it takes for a voicemail message beep to go off?
My understanding is that you are charged as soon as the call connects. Ie as soon as the call goes from ringing to voice mail. As for the time taken, you could time it roughly with a stopwatch.